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【简答题】
营养液浓度表示方法分为( )、( )两类 。
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反馈参考答案：
举一反三
【单选题】________by the advances in technology, many farmers have set up wind farms on their land．
A.
Being encouraged
B.
Encouraging
C.
Having encouraged
D.
Encouraged
【单选题】____ by the advances in technology, many farmers have set up wind farms on their lands.
A.
Being encouraged
B.
Encouraging
C.
Encouraged
D.
Having encouraged
【单选题】According to the last paragraph, what are the advantages of wind power technology?
A.
It can be used for different purposes.
B.
It can replace nuclear power plant.
C.
It can be installed in one's backyard.
D.
Both A and Ｃ.
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